Battery Module Gas Collection Chamber Design
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Solution Overview
Problem
High-output battery modules face challenges in controlling and preventing gas leakage from battery cells, which can lead to inefficiencies and safety issues due to the production of gas during electrochemical reactions.
Innovation Solution
A battery module design featuring a housing with insulating members having openings larger than the vents, a cover forming a gas channel with the insulating member, and an adhesive member to ensure proper alignment and sealing, effectively managing gas discharge and minimizing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery cells are connected in series to achieve high capacity, then power output is improved, but gas production from electrochemical reactions increases causing leakage and safety issues
Solution Approach 1:
The patent introduces a gas collection chamber as an intermediary component between the battery cells and the external environment. This chamber collects gas produced during electrochemical reactions in series-connected high-capacity battery cells, preventing direct leakage while maintaining the high power output configuration. The gas collection chamber acts as a mediator that separates the harmful gas production from the beneficial high power output.
2Object-generated harmful factors
If vents are provided in battery cells for gas release, then gas control is improved, but gas leakage and sealability issues worsen
Solution Approach 1:
The patent merges the venting function with the gas collection chamber by providing multiple vents that open into the common gas collection chamber rather than directly to the external environment. This consolidation allows gas from multiple battery cells to be collected and controlled in a single centralized location, improving both gas control capability and sealability by reducing the number of separate vent openings required in individual cells.
3Object-generated harmful factors
If multiple vents are provided in battery cells, then gas release capability is improved, but manufacturing complexity and alignment precision requirements increase
Solution Approach 1:
The gas collection chamber serves as an intermediary that receives vents from multiple battery cells at different positions. Instead of requiring precise alignment between corresponding vents in each cell, the gas collection chamber accommodates vents at various locations, thereby reducing the manufacturing precision and alignment requirements while maintaining effective gas release capability.
4Object-generated harmful factors
If insulating members with openings are used to cover vents, then gas collection is improved, but device complexity increases
Solution Approach 1:
The insulating member is designed to perform multiple functions simultaneously: it provides electrical insulation between battery cells, serves as a support structure for the gas collection chamber, and incorporates openings that align with vents to facilitate gas collection. This multi-functionality reduces the need for separate components, thereby improving gas collection capability while minimizing the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design efficiently controls gas release from battery cells, enhances productivity by simplifying manufacturing, and improves sealability, thereby preventing gas leakage and ensuring reliable operation.
Implementation Method 1
an insulating member corresponding to the vents... The insulating member may include a heat resistant material
Implementation Method 2
The battery module may further include an adhesive member between the insulating member and the battery cell
Data Source
AI summary
A battery module includes a plurality of battery cells arranged in a first direction, the battery cells having vents, a housing accommodating the battery cells, and an insulating member corresponding to the vents.